<!DOCTYPE html>
<html lang="cmn-hans">
<head>
  <meta charset="UTF-8">
  <title>饼图和色盘</title>
  <link rel="stylesheet" href="css/pie.css">
</head>
<body>
  <div class="pie-chart"></div>
  <div class="color-wheel"></div>
</body>
</html>